[Password Manager] Convert |pending_login_managers_| to an array of scoped_refptr

ios/chrome/browser/passwords/ios_chrome_password_manager_infobar_delegate.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/chrome/browser/passwords/ios_chrome_password_manager_infobar_delegate.h"
 
 #include <utility>
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/string16.h"
 #include "components/password_manager/core/browser/password_form_manager.h"
 #include "components/password_manager/core/browser/password_manager_constants.h"
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/browser/ui/commands/UIKit+ChromeExecuteCommand.h"
 #import "ios/chrome/browser/ui/commands/open_url_command.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ios/chrome/grit/ios_theme_resources.h"
 #include "ios/web/public/referrer.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "url/gurl.h"
 
 IOSChromePasswordManagerInfoBarDelegate::
     ~IOSChromePasswordManagerInfoBarDelegate() {
   password_manager::metrics_util::LogUIDismissalReason(infobar_response_);
 };
 
 IOSChromePasswordManagerInfoBarDelegate::
     IOSChromePasswordManagerInfoBarDelegate(
         bool is_smart_lock_branding_enabled,
-        std::unique_ptr<password_manager::PasswordFormManager> form_to_save)
+        scoped_refptr<password_manager::PasswordFormManager> form_to_save)
     : form_to_save_(std::move(form_to_save)),
       infobar_response_(password_manager::metrics_util::NO_DIRECT_INTERACTION),
       is_smart_lock_branding_enabled_(is_smart_lock_branding_enabled) {}
 
 infobars::InfoBarDelegate::Type
 IOSChromePasswordManagerInfoBarDelegate::GetInfoBarType() const {
   return PAGE_ACTION_TYPE;
 };
 
 base::string16 IOSChromePasswordManagerInfoBarDelegate::GetLinkText() const {
@@ skipping 11 matching lines @@
   base::scoped_nsobject<OpenUrlCommand> command([[OpenUrlCommand alloc]
        initWithURL:GURL(password_manager::kPasswordManagerHelpCenterSmartLock)
           referrer:web::Referrer()
        inIncognito:NO
       inBackground:NO
           appendTo:kCurrentTab]);
   UIWindow* mainWindow = [[UIApplication sharedApplication] keyWindow];
   [mainWindow chromeExecuteCommand:command];
   return true;
 };